Hyoid arch
Encyclopedia
The second pharyngeal arch or hyoid arch (or second branchial arch
) assists in forming the side and front of the neck
.
Category:Embryology
Branchial arch
In the development of vertebrate animals, the pharyngeal arches are anlage for a multitude of structures. In humans, they develop during the fourth week in utero as a series of mesodermal outpouchings on the left and right sides of the developing pharynx...
) assists in forming the side and front of the neck
Neck
The neck is the part of the body, on many terrestrial or secondarily aquatic vertebrates, that distinguishes the head from the torso or trunk. The adjective signifying "of the neck" is cervical .-Boner anatomy: The cervical spine:The cervical portion of the human spine comprises seven boney...
.
Skeletal elements
From the cartilage of the second arch arises- Styloid processStyloid processIn anatomy, a styloid process , usually serving as points of attachment for muscles, refers to the slender, pointed process of :* temporal bone of the skull - Temporal styloid process...
,
- Stylohyoid ligamentStylohyoid ligamentIn connection with the stylohyoideus muscle a ligamentous band, the stylohyoid ligament, may be described.It is a fibrous cord, which is attached to the tip of the styloid process of the temporal bone and the lesser cornu of the hyoid bone....
, and
- Lesser cornuLesser cornuThe lesser cornua are two small, conical eminences, attached by their bases to the angles of junction between the body and greater cornua of the hyoid bone....
of the hyoid boneHyoid boneThe hyoid bone is a horseshoe-shaped bone situated in the anterior midline of the neck between the chin and the thyroid cartilage. At rest, it lies at the level of the base of the mandible in the front and the third cervical vertebra behind.Unlike other bones, the hyoid is only distantly...
.
Muscles
- Muscles of faceFacial musclesThe facial muscles are a group of striated muscles innervated by the facial nerve that, among other things, control facial expression. These muscles are also called mimetic muscles.-Structure:...
- Occipitofrontalis muscle
- Platysma
- Stylohyoid muscle
- Posterior belly of Digastric
- StapediusStapediusThe stapedius is the smallest skeletal muscle in the human body. At just over one millimeter in length, its purpose is to stabilize the smallest bone in the body, the stapes....
muscle
- Auricular muscles
External links
- Overview at howard.edu
- Second branchial arch: Mnemonic
Category:Embryology